Liquid degreasing agent and preparation method thereof

Abstract

The invention discloses a liquid degreasing agent and a preparation method thereof. The liquid degreasing agent is prepared from the following components in percentage by volume: 30%-55% of pure water, 20%-30% of sodium hydroxide, 15%-20% of trisodium phosphate, 3%-5% of an OP-10 surfactant and 1%-3% of an AEO-9 surfactant. Comprising the following steps: adding a proper amount of pure water into a reaction container with a stirring device and a temperature control device, sequentially adding sodium hydroxide and trisodium phosphate, starting the stirring device to stir until sodium hydroxide and trisodium phosphate are completely dissolved, and controlling the temperature of the solution not to exceed 50 DEG C; the temperature of the solution is reduced to 30 DEG C, an OP-10 surfactant and an AEO-9 surfactant are added, then the remaining pure water is added, a stirring device is started for stirring so that all the components can be completely dissolved with one another, and a uniform liquid degreasing agent is obtained; the prepared liquid degreasing agent is subjected to solution specific gravity detection, and after the detection is qualified, the liquid degreasing agent is contained in a packaging barrel. The degreasing agent has the beneficial effects that the degreasing agent has a good degreasing effect, is environment-friendly, and has no corrosion or low corrosion to various materials.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical cleaning agents, in particular to a liquid degreasing agent and a preparation method thereof. Background Art

[0002] Degreasers are liquid cleaning agents carefully formulated with a variety of surfactants and builders. They are easy to use and particularly well-suited for modern industrial cleaning processes. They easily remove grease, carbon deposits, and mildew from a variety of surfaces. Their powerful properties, including rapid penetration and emulsification, significantly improve cleaning efficiency.

[0003] Existing degreasers have limitations in terms of degreasing effectiveness, environmental friendliness, and corrosiveness. For example, some degreasers contain large amounts of organic solvents, which not only pollute the environment but also pose safety risks such as flammability and explosion hazards. Other degreasers are highly corrosive to materials such as metals, limiting their application. Summary of the Invention

[0004] In response to the deficiencies of the prior art, the present application proposes a liquid degreasing agent and a preparation method thereof, which has good degreasing effect, is environmentally friendly, and has no or low corrosion to a variety of materials.

[0005] The following is the technical solution of the present invention, a liquid degreasing agent, composed of the following components in volume percentage: 30%-55% pure water, 20%-30% sodium hydroxide, 15%-20% trisodium phosphate, 3%-5% OP-10 surfactant, and 1%-3% AEO-9 surfactant.

[0006] As a preferred solution of the present invention, the conductivity of pure water is less than 10 μS / cm.

[0007] As a preferred embodiment of the present invention, the purity of sodium hydroxide is not less than 98%.

[0008] As a preferred embodiment of the present invention, the purity of trisodium phosphate is not less than 95%.

[0009] As a preferred embodiment of the present invention, the active ingredient content of the OP-10 surfactant is not less than 97%.

[0010] As a preferred embodiment of the present invention, the active ingredient content of the AEO-9 surfactant is not less than 95%.

[0011] A method for preparing a liquid degreasing agent comprises the following steps:

[0012] S1. Prepare pure water, sodium hydroxide, trisodium phosphate, OP-10 surfactant, and AEO-9 surfactant based on the formula ratio;

[0013] S2. Add an appropriate amount of pure water to a reaction vessel equipped with a stirring device and a temperature control device, add sodium hydroxide and trisodium phosphate in sequence, start the stirring device and stir until the sodium hydroxide and trisodium phosphate are completely dissolved and the solution temperature does not exceed 50°C;

[0014] S3. When the solution temperature drops to 30°C, add OP-10 surfactant and AEO-9 surfactant, then add the remaining pure water, start the stirring device to stir until all ingredients are completely dissolved, and obtain a uniform liquid degreaser;

[0015] S4. Test the solution specific gravity of the prepared liquid degreaser. If the test is qualified, use a packaging barrel to hold the liquid degreaser.

[0016] As a preferred solution of the present invention, in S2, the stirring speed is set to 200-300 rpm, and the stirring time is 30 minutes.

[0017] As a preferred solution of the present invention, in S3, the stirring speed is adjusted to 100-190 rpm, and the stirring time is 2 hours.

[0018] As a preferred solution of the present invention, in S4, the solution specific gravity range is 1.1-1.4 g / cm 3

[0019] Beneficial effects of the present invention:

[0020] 1. The liquid degreasing agent of the present invention can quickly and effectively decompose and remove various oil stains by rationally selecting sodium hydroxide, trisodium phosphate and a specific surfactant and optimizing their ratio, with an oil removal rate of over 98%;

[0021] 2. The liquid degreasing agent of the present invention does not contain organic solvents, which reduces pollution to the environment and meets environmental protection requirements;

[0022] 3. The liquid degreaser of the present invention has good compatibility with a variety of metal materials (such as steel, aluminum alloy, copper alloy, etc.) as well as plastics, ceramics and other materials. At normal use concentrations, the corrosion rate of these materials is extremely low and will not cause damage to the items being cleaned;

[0023] 4. The preparation method of the present invention is simple to operate, requires common equipment, and is easy to realize industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a flow chart of the preparation method of the liquid degreasing agent of the present invention; DETAILED DESCRIPTION

[0025] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] Example 1:

[0027] A liquid degreasing agent is composed of the following components in volume percentage: 30%-55% pure water, 20%-30% sodium hydroxide, 15%-20% trisodium phosphate, 3%-5% OP-10 surfactant, and 1%-3% AEO-9 surfactant.

[0028] like Figure 1 As shown, the preparation method of the liquid degreasing agent comprises the following steps:

[0029] S1. Prepare raw materials: Prepare pure water, sodium hydroxide, trisodium phosphate, OP-10 surfactant and AEO-9 surfactant that meet quality standards according to the above formula ratio;

[0030] Among them, the conductivity of pure water is required to be less than 10μS / cm, the purity of sodium hydroxide is not less than 98%, the purity of trisodium phosphate is not less than 95%, the active ingredient content of OP-10 surfactant is not less than 97%, and the active ingredient content of AEO-9 surfactant is not less than 95%;

[0031] S2. Preliminary dissolution: In a reaction vessel equipped with a stirring device and a temperature control device, first add pure water accounting for 30% of the total volume;

[0032] Next, add 30% sodium hydroxide and 20% trisodium phosphate in sequence, start the stirring device, set the stirring speed to 200-300 rpm, and stir for 30 minutes until the sodium hydroxide and trisodium phosphate are completely dissolved;

[0033] The temperature of the solution is controlled at no more than 50°C by a temperature control device to prevent the temperature from being too high due to heat release during the dissolution process;

[0034] S3. Deep mixing: After the solution temperature has cooled naturally or dropped to 30°C via a temperature control device, add 5% OP-10 and 2% AEO-9 surfactants, then add the remaining pure water. Start the stirring device again, adjust the stirring speed to 100-190 rpm, and stir for 2 hours to allow the components to completely dissolve in each other and obtain a uniform liquid degreaser.

[0035] S4. Quality inspection and packaging: The prepared liquid degreaser is quality inspected. The inspection items include solution specific gravity and appearance. The solution specific gravity should be between 1.1-1.4g / cm 3 The alkali equivalent should be 20-40mgKOH / g, and the appearance should be a uniform liquid with no stratification or precipitation.

[0036] If the test results are correct, use a clean, disinfected and well-sealed packaging barrel to hold the above mixed solution. The packaging barrel material should comply with relevant food contact or industrial packaging standards to ensure that the product is not contaminated or leaked during storage and transportation.

[0037] Example 2

[0038] A liquid degreasing agent, comprising the following components in percentage by volume: 40% pure water, 25% sodium hydroxide, 18% trisodium phosphate, 4% OP-10 surfactant, and 3% AEO-9 surfactant;

[0039] The preparation method of the liquid degreasing agent comprises the following steps:

[0040] S101. Prepare raw materials according to the formula: the conductivity of pure water is 8 μS / cm, the purity of sodium hydroxide is 98.5%, the purity of trisodium phosphate is 96%, the active ingredient content of OP-10 surfactant is 99%, and the active ingredient content of AEO-9 surfactant is 98%.

[0041] S102, adding 40% pure water to the reaction vessel, followed by 25% sodium hydroxide and 18% trisodium phosphate, and stirring at 200 rpm for 30 minutes, during which the solution temperature was controlled below 50° C.;

[0042] S103, after the temperature drops to 30°C, add 4% OP-10 and 3% AEO-9 surfactants, then add the remaining pure water, and stir at 150 rpm for 2 hours;

[0043] S104, the specific gravity of the test solution is 1.27g / cm 3 , the appearance is uniform and transparent. After passing the test, it is packaged in packaging barrels.

[0044] Oil removal effectiveness tests were conducted on oily steel, aluminum alloy, plastic, and ceramic samples. The liquid degreaser prepared in this example was used to clean the samples. After soaking them at room temperature for 20 minutes, the samples were rinsed with clean water. The results showed that the oil removal rate on the surfaces of all samples exceeded 95%, with no significant corrosion to the sample materials.

[0045] Example 3

[0046] A liquid degreasing agent is composed of the following components in volume percentage: 35% pure water, 28% sodium hydroxide, 16% trisodium phosphate, 5% OP-10 surfactant, and 2% AEO-9 surfactant.

[0047] The preparation method of the liquid degreasing agent comprises the following steps:

[0048] S111. Prepare raw materials according to the formula: pure water with an electrical conductivity of 8 μS / cm, sodium hydroxide with a purity of 99%, trisodium phosphate with a purity of 95.5%, OP-10 surfactant with an active ingredient content of 98%, and AEO-9 surfactant with an active ingredient content of 97%;

[0049] S112, adding 35% pure water to the reaction vessel, followed by 28% sodium hydroxide and 16% trisodium phosphate, stirring at 220 rpm for 30 minutes, and controlling the temperature below 45° C.;

[0050] S113. When the temperature drops to 30°C, add 5% OP-10 and 2% AEO-9 surfactants, and then add the remaining pure water, and stir at a speed of 180 rpm for 2 hours.

[0051] S114, the specific gravity of the test solution is 1.24g / cm 3 , with no stratification or precipitation on the surface. After passing the test, it is packaged in packaging barrels.

[0052] Oil removal effectiveness testing: Oily steel, aluminum alloy, plastic, and ceramic samples were cleaned using the liquid degreaser prepared in this example. After soaking at room temperature for 20 minutes, the samples were rinsed with clean water. The results showed an oil removal rate exceeding 98%, with minimal corrosion to various materials, meeting practical application requirements.

[0053] The liquid degreasing agent of the present invention can quickly and effectively decompose and remove various types of oil stains by rationally selecting sodium hydroxide, trisodium phosphate and a specific surfactant and optimizing their ratio, with an oil removal rate of over 98%. The formula does not contain organic solvents, thereby reducing pollution to the environment and meeting environmental protection requirements. The liquid degreasing agent has good compatibility with various metal materials (such as steel, aluminum alloy, copper alloy, etc.) as well as plastics, ceramics and other materials. At normal usage concentrations, the corrosion rate of these materials is extremely low, and no damage is caused to the cleaned items. The preparation method is simple to operate, the required equipment is common, and industrial production is easy to achieve.

[0054] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0055] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A liquid degreasing agent, characterized in that The invention is composed of the following components in volume percentage: 30%-55% of pure water, 20%-30% of sodium hydroxide, 15%-20% of trisodium phosphate, 3%-5% of OP-10 surfactant, and 1%-3% of AEO-9 surfactant.

2. A liquid degreasing agent according to claim 1, characterized in that: The conductivity of pure water is less than 10μS / cm.

3. A liquid degreasing agent according to claim 1, characterized in that: The purity of sodium hydroxide is not less than 98%.

4. The liquid degreasing agent according to claim 1, characterized in that: The purity of trisodium phosphate is not less than 95%.

5. The liquid degreasing agent according to claim 1, characterized in that: The active ingredient content of OP-10 surfactant is not less than 97%.

6. The liquid degreasing agent according to claim 1, characterized in that: The active ingredient content of AEO-9 surfactant is not less than 95%.

7. A method for preparing a liquid degreasing agent, applicable to a liquid degreasing agent according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Prepare pure water, sodium hydroxide, trisodium phosphate, OP-10 surfactant, and AEO-9 surfactant based on the formula ratio; S2. Add an appropriate amount of pure water to a reaction vessel equipped with a stirring device and a temperature control device, add sodium hydroxide and trisodium phosphate in sequence, start the stirring device and stir until the sodium hydroxide and trisodium phosphate are completely dissolved and the solution temperature does not exceed 50°C; S3. When the solution temperature drops to 30°C, add OP-10 surfactant and AEO-9 surfactant, then add the remaining pure water, start the stirring device to stir until all ingredients are completely dissolved, and obtain a uniform liquid degreaser; S4. Test the solution specific gravity of the prepared liquid degreaser. If the test is qualified, use a packaging barrel to hold the liquid degreaser.

8. The method for preparing a liquid degreasing agent according to claim 7, characterized in that: In S2, the stirring speed was set to 200-300 rpm and the stirring time was 30 minutes.

9. The method for preparing a liquid degreasing agent according to claim 7, characterized in that: In S3, the stirring speed was adjusted to 100-190 rpm, and the stirring time was 2 hours.

10. The method for preparing a liquid degreasing agent according to claim 7, characterized in that: In S4, the solution specific gravity range is 1.1-1.4g / cm 3 .

Images